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The timing of shedding follows a circadian rhythm according to neuromodulators, namely dopamine and melatonin. Melatonin is synthesized by the photoreceptors at night, and is inhibited by light and dopamine, so triggers cone disc shedding. Dopamine production is stimulated by light and inhibited by dark and melatonin, so triggers cone disc ...
A dragonfly in its radical final moult, metamorphosing from an aquatic nymph to a winged adult.. In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is a process by which an animal casts off parts of its body to serve some beneficial purpose, either at specific times of the year, or at specific points in ...
Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").
The day is winding down, and you're settling into your nighttime routine. Then, you notice that your gut hasn't gotten the "let's chill" memo and is starting to, shall we say, make a lot of noise.
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The act of crying has been defined as "a complex secretomotor phenomenon characterized by the shedding of tears from the lacrimal apparatus, without any irritation of the ocular structures", instead, giving a relief which protects from conjunctivitis. [1] A related medical term is lacrimation, which also refers to the non-emotional shedding of ...
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The kiwi is a family of nocturnal birds endemic to New Zealand.. While it is difficult to say which came first, nocturnality or diurnality, a hypothesis in evolutionary biology, the nocturnal bottleneck theory, postulates that in the Mesozoic, many ancestors of modern-day mammals evolved nocturnal characteristics in order to avoid contact with the numerous diurnal predators. [3]